General

  • Target

    28ea220f0c8f906c66e1ab5657ca0260.exe

  • Size

    269KB

  • Sample

    210920-rgnvpahabq

  • MD5

    28ea220f0c8f906c66e1ab5657ca0260

  • SHA1

    04d158591858f17abd9295f481c26ae7ef771e37

  • SHA256

    71bbaf19229855f0bfdebbe93d12b5f5fac6c0b542b5ca3b5a00d4b088ccdadc

  • SHA512

    aba54593ad2344b0c40e8942f1b4099c639eb443ec2a31c98813243bcc7f03fb192a879be7748d1681db889673e5e1e5d257d8256112359363daa0eacd945cb0

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://venerynnet1.top/

http://kevonahira2.top/

http://vegangelist3.top/

http://kingriffaele4.top/

http://arakeishant5.top/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

installEXE

C2

146.70.35.170:30905

Extracted

Family

redline

Botnet

installbv

C2

80.85.137.89:17954

Extracted

Family

redline

Botnet

2k superstar

C2

91.142.77.155:5469

Extracted

Family

redline

Botnet

Moneymaker

C2

185.244.217.166:56316

Targets

    • Target

      28ea220f0c8f906c66e1ab5657ca0260.exe

    • Size

      269KB

    • MD5

      28ea220f0c8f906c66e1ab5657ca0260

    • SHA1

      04d158591858f17abd9295f481c26ae7ef771e37

    • SHA256

      71bbaf19229855f0bfdebbe93d12b5f5fac6c0b542b5ca3b5a00d4b088ccdadc

    • SHA512

      aba54593ad2344b0c40e8942f1b4099c639eb443ec2a31c98813243bcc7f03fb192a879be7748d1681db889673e5e1e5d257d8256112359363daa0eacd945cb0

    • MedusaLocker

      Ransomware with several variants first seen in September 2019.

    • MedusaLocker Payload

    • Modifies WinLogon for persistence

    • Modifies security service

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Modifies boot configuration data using bcdedit

    • XMRig Miner Payload

    • Creates new service(s)

    • Deletes System State backups

      Uses wbadmin.exe to inhibit system recovery.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Deletes itself

    • Drops startup file

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks